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nguyensysy567
2 năm trước
Các anh chị giải giúp em với ạ Chất Y có công thức MR3, tổng số hạt cơ bản trong 1 phân tử Y là 199, số hạt mang diện nhiều hơn số hạt không mang điện là 57. Cũng trong phân tử này thi số hạt mang diện của nguyên tố R nhiều hơn của nguyên tố M là 76 hạt. Xác định công thức phân tử của Y
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